//package com.atguigu.yygh.gateway.filter;
//
//import com.alibaba.fastjson.JSONObject;
//import com.atguigu.yygh.common.helper.JwtHelper;
//import com.atguigu.yygh.common.result.Result;
//import com.atguigu.yygh.common.result.ResultCodeEnum;
//import org.springframework.cloud.gateway.filter.GatewayFilterChain;
//import org.springframework.cloud.gateway.filter.GlobalFilter;
//import org.springframework.core.Ordered;
//import org.springframework.core.io.buffer.DataBuffer;
//import org.springframework.http.server.reactive.ServerHttpRequest;
//import org.springframework.http.server.reactive.ServerHttpResponse;
//import org.springframework.stereotype.Component;
//import org.springframework.util.AntPathMatcher;
//import org.springframework.util.StringUtils;
//import org.springframework.web.server.ServerWebExchange;
//import reactor.core.publisher.Mono;
//
//import java.nio.charset.StandardCharsets;
//import java.util.List;
//
///**
// * <p>
// * 全局Filter，统一处理会员登录与外部不允许访问的服务
// * </p>
// *
// * @author qy
// * @since 2019-11-21
// */
//@Component
//public class AuthGlobalFilter implements GlobalFilter, Ordered {
//
//    private AntPathMatcher antPathMatcher = new AntPathMatcher();
//
//    @Override
//    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
//        ServerHttpRequest request = exchange.getRequest();
//        String path = request.getURI().getPath();
//        System.out.println("==="+path);
//
//        //内部服务接口，不允许外部访问
//        if(antPathMatcher.match("/**/inner/**", path)) {
//            ServerHttpResponse response = exchange.getResponse();
//            return out(response, ResultCodeEnum.PERMISSION);
//        }
//
//        Long userId = this.getUserId(request);
//        //api接口，异步请求，校验用户必须登录
//        if(antPathMatcher.match("/api/**/auth/**", path)) {
//            if(StringUtils.isEmpty(userId)) {
//                ServerHttpResponse response = exchange.getResponse();
//                return out(response, ResultCodeEnum.LOGIN_AUTH);
//            }
//        }
//        return chain.filter(exchange);
//    }
//
//    @Override
//    public int getOrder() {
//        return 0;
//    }
//
//    /**
//     * api接口鉴权失败返回数据
//     * @param response
//     * @return
//     */
//    private Mono<Void> out(ServerHttpResponse response, ResultCodeEnum resultCodeEnum) {
//        Result result = Result.build(null, resultCodeEnum);
//        byte[] bits = JSONObject.toJSONString(result).getBytes(StandardCharsets.UTF_8);
//        DataBuffer buffer = response.bufferFactory().wrap(bits);
//        //指定编码，否则在浏览器中会中文乱码
//        response.getHeaders().add("Content-Type", "application/json;charset=UTF-8");
//        return response.writeWith(Mono.just(buffer));
//    }
//
//    /**
//     * 获取当前登录用户id
//     * @param request
//     * @return
//     */
//    private Long getUserId(ServerHttpRequest request) {
//        String token = "";
//        List<String> tokenList = request.getHeaders().get("token");
//        if(null  != tokenList) {
//            token = tokenList.get(0);
//        }
//        if(!StringUtils.isEmpty(token)) {
//            return JwtHelper.getUserId(token);
//        }
//        return null;
//    }
//}
